<template>
  <div class="loginContainer">
    <el-form
      ref="loginForm"
      :rules="loginRules"
      :model="loginForm"
      class="login-form"
    >
      <h3 class="title">星云工资管理系统</h3>
      <el-form-item prop="username">
        <el-input
          type="text"
          auto-complete="off"
          placeholder="用户名"
          v-model.trim="loginForm.username"
          @keyup.enter.native="login"
        >
          <svg-icon
            slot="prefix"
            icon-class="user"
            class="el-input__icon input-icon"
          />
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          show-password
          type="password"
          auto-complete="off"
          placeholder="密码"
          v-model.trim="loginForm.password"
          @keyup.enter.native="login"
        >
          <svg-icon
            slot="prefix"
            icon-class="password"
            class="el-input__icon input-icon"
          />
        </el-input>
      </el-form-item>
      <el-checkbox
        style="margin: 0px 0px 25px 0px"
        v-model="loginForm.rememberMe"
      >
        30天内免登录
      </el-checkbox>
      <el-form-item>
        <el-button
          :loading="loading"
          type="primary"
          style="width: 100%"
          @click.native="login"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <span style="float: right">
          还未注册？
          <router-link to="/register">立即注册</router-link>
          |
          <router-link to="/forgot">忘记密码?</router-link>
        </span>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import Cookies from 'js-cookie'
import { encrypt, decrypt } from '@/utils/jsencrypt'

export default {
  name: 'Login',
  data() {
    return {
      loading: false,
      loginForm: {
        username: '',
        password: '',
        rememberMe: false,
      },
      loginRules: {
        username: [
          { required: true, trigger: 'blur', message: '用户名不能为空' },
        ],
        password: [
          { required: true, trigger: 'blur', message: '密码不能为空' },
        ],
      },
      redirect: undefined,
    }
  },
  created() {
    this.getCookies()
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true,
    },
  },
  methods: {
    login() {
      this.$refs.loginForm.validate((valid) => {
        if (valid && !this.loading) {
          this.loading = true
          if (this.loginForm.rememberMe) {
            Cookies.set('username', this.loginForm.username, { expires: 30 })
            Cookies.set('password', encrypt(this.loginForm.password), {
              expires: 30,
            })
            Cookies.set('rememberMe', this.loginForm.rememberMe, {
              expires: 30,
            })
          } else {
            Cookies.remove('username')
            Cookies.remove('password')
            Cookies.remove('rememberMe')
          }
          this.doLogin()

        }
      })
    },
    doLogin() {
      this.$store
        .dispatch('user/Login', this.loginForm)
        .then(() => {
          this.$router.push({ path: this.redirect || '/' })
        })
        .catch((error) => {
          console.log(error)
          this.loading = false
        })
    },
    getCookies() {
      const username = Cookies.get('username')
      const password = Cookies.get('password')
      const rememberMe = Cookies.get('rememberMe')

      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password:
          password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
      }

      if (this.loginForm.rememberMe) {
        this.loading = true
        this.doLogin()
      }
    },
  },
}
</script>

<style lang="scss"></style>
